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Docker vs containerd: What are the differences?


This Markdown code presents the key differences between Docker and containerd for use in a website.

  1. Docker: Platform for Building, Running, and Managing Containers: Docker is a powerful platform that allows users to build, run, and manage containers. It provides a comprehensive set of tools, including a command-line interface (CLI) and a graphical user interface (GUI), making it easy to create and deploy containers.

  2. Containerd: Container Runtime and Core Building Block: containerd, on the other hand, is a container runtime and core building block for container platforms. It is designed to be simple and focused, providing essential functionality to manage the lifecycle of containers. Unlike Docker, containerd does not include advanced features such as the Docker CLI or GUI.

  3. Different Levels of Abstraction: Docker operates at a higher level of abstraction compared to containerd. Docker provides a complete container platform that includes not only the container runtime but also additional features like orchestration, networking, and storage management. containerd, on the other hand, focuses solely on the container runtime, leaving other functionalities to be handled by complementary tools or platforms.

  4. Community and Ecosystem: Docker has a vibrant community and a robust ecosystem built around it. It enjoys widespread popularity and has a vast array of third-party tools and integrations available. containerd, although gaining popularity, does not have the same level of community support or as extensive an ecosystem as Docker.

  5. Compatibility with Docker: Docker and containerd are not mutually exclusive but instead can work together. containerd is designed to be compatible with the Docker API, allowing users to run Docker images and containers using containerd as the underlying runtime. This compatibility makes it easy to transition from using Docker to adopting containerd.

  6. Focus and Use Case: Docker is well-suited for developers and organizations looking for a comprehensive container platform that includes a variety of features and tools. On the other hand, containerd is a more lightweight and focused option, suitable for users who only require the essential functionalities of a container runtime without the additional features provided by Docker.

In summary, Docker is a comprehensive container platform with advanced features and a vibrant ecosystem, whereas containerd is a lightweight container runtime focused on providing essential functionalities. They can be used together, and the choice between them depends on the specific requirements and use case of the user or organization.

Decisions about containerd and Docker
Florian Sager
IT DevOp at Agitos GmbH · | 3 upvotes · 399.8K views

lxd/lxc and Docker aren't congruent so this comparison needs a more detailed look; but in short I can say: the lxd-integrated administration of storage including zfs with its snapshot capabilities as well as the system container (multi-process) approach of lxc vs. the limited single-process container approach of Docker is the main reason I chose lxd over Docker.

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Pros of containerd
Pros of Docker
  • 3
    No Need for docker shim
  • 2
    Supports Kubernetes version greater than 1.21
  • 0
    Needs docker shim to work on kubernetes
  • 0
    No kubernetes support after 1.22
  • 823
    Rapid integration and build up
  • 691
  • 521
    Open source
  • 505
    Testa­bil­i­ty and re­pro­ducibil­i­ty
  • 460
  • 218
  • 185
  • 106
    Upgrading / down­grad­ing / ap­pli­ca­tion versions
  • 88
  • 85
    Private paas environments
  • 34
  • 26
    Limit resource usage
  • 17
    Game changer
  • 16
    I love the way docker has changed virtualization
  • 14
  • 12
  • 8
    Docker's Compose tools
  • 6
    Easy setup
  • 6
    Fast and Portable
  • 5
    Because its fun
  • 4
    Makes shipping to production very simple
  • 3
    Highly useful
  • 3
    It's dope
  • 2
    Very easy to setup integrate and build
  • 2
    HIgh Throughput
  • 2
    Package the environment with the application
  • 2
    Does a nice job hogging memory
  • 2
    Open source and highly configurable
  • 2
    Simplicity, isolation, resource effective
  • 2
    MacOS support FAKE
  • 2
    Its cool
  • 2
    Docker hub for the FTW
  • 2
  • 0

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Cons of containerd
Cons of Docker
    Be the first to leave a con
    • 8
      New versions == broken features
    • 6
      Unreliable networking
    • 6
      Documentation not always in sync
    • 4
      Moves quickly
    • 3
      Not Secure

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    What is containerd?

    An industry-standard container runtime with an emphasis on simplicity, robustness, and portability

    What is Docker?

    The Docker Platform is the industry-leading container platform for continuous, high-velocity innovation, enabling organizations to seamlessly build and share any application — from legacy to what comes next — and securely run them anywhere

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    What companies use containerd?
    What companies use Docker?
    See which teams inside your own company are using containerd or Docker.
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    What tools integrate with containerd?
    What tools integrate with Docker?
      No integrations found

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      Blog Posts

      Jul 9 2019 at 7:22PM

      Blue Medora

      DockerPostgreSQLNew Relic+8
      DockerAmazon EC2Scala+8
      What are some alternatives to containerd and Docker?
      Rocket is a cli for running App Containers. The goal of rocket is to be composable, secure, and fast.
      Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the users declared intentions.
      LXC is a userspace interface for the Linux kernel containment features. Through a powerful API and simple tools, it lets Linux users easily create and manage system or application containers.
      Docker Compose
      With Compose, you define a multi-container application in a single file, then spin your application up in a single command which does everything that needs to be done to get it running.
      Rancher is an open source container management platform that includes full distributions of Kubernetes, Apache Mesos and Docker Swarm, and makes it simple to operate container clusters on any cloud or infrastructure platform.
      See all alternatives